Django：Web框架，WSGI，WSGI实现浏览器与服务器通信，路由route，WSGI实现页面访问

case1：

import socketdef handle_request(conn):  # 处理数据返回buff = conn.recv(1024)print(buff)conn.send("HTTP/1.1 200 OK\r\n\r\n".encode("utf8"))  # HTTP规范html = """<html><head></head><body><h1> hello my world </h1></body><html>"""conn.send(html.encode("utf8"))def main():sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)sock.bind(("localhost", 8000))  # 绑定Ip,端口sock.listen(5)  # 启动监听print("启动服务器，等待客户端连接……")while True:conn, address = sock.accept()handle_request(conn)conn.close()if __name__ == "__main__":main()

case2：

import socketdef handle_request(conn):  # 处理数据返回buff = conn.recv(1024)print(buff)conn.send("HTTP/1.1 200 OK\r\n\r\n".encode("utf8"))  # HTTP规范# html = """#     <html>#         <head></head>#         <body>#             <h1> hello my world </h1>#         </body>#     <html># """with open("demo.html") as f:html = f.read()conn.send(html.encode("utf8"))def main():sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)sock.bind(("localhost", 8000))  # 绑定Ip,端口sock.listen(5)  # 启动监听print("启动服务器，等待客户端连接……")while True:conn, address = sock.accept()handle_request(conn)conn.close()if __name__ == "__main__":main()

再新建一个html文件，文件名为“demo.html”，里面代码如下：

<!doctype html>
<html lang="en">
<head><meta charset="UTF-8"><meta name="viewport"content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title>
</head>
<body><h1> hello my beautiful world.</h1>
</body>
</html>

运行main()，

case1：从Python文档，搜索WEGI，复制Example代码：

在make_server()函数，补全IP地址，这里用"0.0.0.0"即任何的IP过来都可以访问

with make_server('0.0.0.0', 8000, hello_world_app) as httpd:print("Serving on port 8000...")

然后run

from wsgiref.simple_server import make_server# Every WSGI application must have an application object - a callable
# object that accepts two arguments. For that purpose, we're going to
# use a function (note that you're not limited to a function, you can
# use a class for example). The first argument passed to the function
# is a dictionary containing CGI-style environment variables and the
# second variable is the callable object (see PEP 333).
def hello_world_app(environ, start_response):# print("请求：environ", environ)  # 查看环境变量environ的值，environ是一个字典for k, v in environ.items():   # 解包环境变量environ，更方便地看值print(k, ":", v)status = '200 OK'  # HTTP Statusheaders = [('Content-type', 'text/plain; charset=utf-8')]  # HTTP Headersstart_response(status, headers)# The returned object is going to be printedreturn [b"Hello World"]with make_server('0.0.0.0', 8000, hello_world_app) as httpd:print("Serving on port 8000...")# Serve until process is killedhttpd.serve_forever()

截取environ的部分值，如下：

case2：在上面case1里加一句代码，

    query_string = environ.get("QUERY_STRING")print(query_string)

然后run，启动WSGI，然后到浏览器地址栏端口号后面，加一些内容，然后回车：

可以看到控制台就取到了浏览器的url值

from wsgiref.simple_server import make_server# Every WSGI application must have an application object - a callable
# object that accepts two arguments. For that purpose, we're going to
# use a function (note that you're not limited to a function, you can
# use a class for example). The first argument passed to the function
# is a dictionary containing CGI-style environment variables and the
# second variable is the callable object (see PEP 333).
def hello_world_app(environ, start_response):# print("请求：environ", environ)  # 查看环境变量environ的值# for k, v in environ.items():   # 解包环境变量environ，更方便地看值#     print(k, ":", v)query_string = environ.get("QUERY_STRING")print(query_string)status = '200 OK'  # HTTP Statusheaders = [('Content-type', 'text/plain; charset=utf-8')]  # HTTP Headersstart_response(status, headers)# The returned object is going to be printedreturn [b"Hello World"]with make_server('0.0.0.0', 8000, hello_world_app) as httpd:print("Serving on port 8000...")# Serve until process is killedhttpd.serve_forever()

case3：在上面case1里加一句代码，

    path_info = environ.get("PATH_INFO", "未找到")print(path_info)

然后run，启动WSGI，然后到浏览器地址栏端口号后面，加一些内容，然后回车：

可以看到控制台就取到了浏览器的url值

from wsgiref.simple_server import make_server# Every WSGI application must have an application object - a callable
# object that accepts two arguments. For that purpose, we're going to
# use a function (note that you're not limited to a function, you can
# use a class for example). The first argument passed to the function
# is a dictionary containing CGI-style environment variables and the
# second variable is the callable object (see PEP 333).
def hello_world_app(environ, start_response):# print("请求：environ", environ)  # 查看环境变量environ的值# for k, v in environ.items():   # 解包环境变量environ，更方便地看值#     print(k, ":", v)# query_string = environ.get("QUERY_STRING")# print(query_string)path_info = environ.get("PATH_INFO", "未找到")print(path_info)status = '200 OK'  # HTTP Statusheaders = [('Content-type', 'text/plain; charset=utf-8')]  # HTTP Headersstart_response(status, headers)# The returned object is going to be printedreturn [b"Hello World"]with make_server('0.0.0.0', 8000, hello_world_app) as httpd:print("Serving on port 8000...")# Serve until process is killedhttpd.serve_forever()

引申：case1和case2，我们在浏览器的各种行为能被localhost所解析，即当我们在浏览器URL输入不同的内容，WSGI传输URL到localhost寻找相应的内容，如果找到了就给我们返回结果。正如，点击百度首页的新闻，跳转到新闻页面；点击地图，跳转到地图页面。

WSGI实现页面访问

首先，在pycharm里新建三个HTML文件，

然后在主程序中添加调用的代码，

from wsgiref.simple_server import make_server# Every WSGI application must have an application object - a callable
# object that accepts two arguments. For that purpose, we're going to
# use a function (note that you're not limited to a function, you can
# use a class for example). The first argument passed to the function
# is a dictionary containing CGI-style environment variables and the
# second variable is the callable object (see PEP 333).def index():with open("index.html", "rb") as f:index_info = f.read()return [index_info]def login():with open("login.html", "rb") as f:login_info = f.read()return [login_info]def notfund():with open("notfund.html", "rb") as f:notfund_info = f.read()return [notfund_info]def hello_world_app(environ, start_response):# print("请求：environ", environ)  # 查看环境变量environ的值# for k, v in environ.items():   # 解包环境变量environ，更方便地看值#     print(k, ":", v)# query_string = environ.get("QUERY_STRING")# print(query_string)# path_info = environ.get("PATH_INFO", "未找到")# print(path_info)status = '200 OK'  # HTTP Statusheaders = [('Content-type', 'text/plain; charset=utf-8')]  # HTTP Headersstart_response(status, headers)path = environ.get("PATH_INFO")if path == "/index":return index()elif path == "/login":return login()else:return notfund()with make_server('0.0.0.0', 8000, hello_world_app) as httpd:print("Serving on port 8000...")# Serve until process is killedhttpd.serve_forever()

然后到浏览器，在localhost:8000后面输入

回车，浏览器即显示我们预先在index.html里的内容

遗留问题：

    path = environ.get("PATH_INFO")if path == "/index":return index()elif path == "/login":return login()else:return notfund()

这里根据不同的路由返回对应的页面，是在代码里写死的，即硬编码，如果页面很多的话，就需要写很多映射的规则，有没有什么方式对这个路由进行改进呢？

PS: source, bilibili

Django：Web框架，WSGI，WSGI实现浏览器与服务器通信，路由route，WSGI实现页面访问相关推荐

Django Web框架教学笔记-1
<Django Web框架教学笔记> 目录文章目录 <Django Web框架教学笔记> 目录 Django框架的介绍 Django的安装 Django框架开发创建项目的指 ...
Django web框架学习之旅（4）
<Django Web 框架> 目录 Django shell的使用 admin 后台数据库管理自定义后台管理数据表修改后台Models的展现形式模型管理器类数据库表管理数据表关 ...
Django web 框架学习之旅（3）
<Django Web 框架> 目录静态文件 Django中的应用 - app 什么是应用(app) 创建应用app Django应用的结构组成数据库和模型 Django下使用my ...
Django Web框架的使用
1.前言 Django是基于Python的重量级开源Web框架.Django拥有高度定制的ORM和大量的API,简单灵活的视图编写.优雅的url.适用于快速开发的模板以及强大的管理后台. Django ...
Django web框架
Web框架 web 框架本质 - Web应用本质上就是一个socket服务端,而用户的浏览器就是一个socket客户端. HTTP协议 HTTP协议介绍HTTP协议对收发消息的格式要求每个HTTP ...
Web框架中间件插件BurpSuite浏览器被动主动探针[武装浏览器]
好东西浏览器插件 Penetration Testing Kit 这个工具他集成了中间件,等版本信息,漏洞信息,url,标识头等信息,WAF/CDN识别,密匙等信息,多种信息的功能上集合的插件 UR ...
在IIS上部署基于django WEB框架的python网站应用
django是一款基于python语言的WEB开源框架,本文给出了如何将基于django写的python网站部署到window的IIS上. 笔者的运行环境: Window xp sp3 IIS 5.1 ...
Django web框架学习笔记
Django1.11.4 版本支持Python3.5 3.6 1.Django安装 pip install django==1.11.4 2.验证是否安装成本 python import django ...
python Django web 框架 (二十)之ORM
Django之模型层第一篇:单表操作一 ORM简介我们在使用Django框架开发web应用的过程中,不可避免地会涉及到数据的管理操作(如增.删.改.查),而一旦谈到数据的管理操作,就需要用到数据库 ...

Django：Web框架，WSGI，WSGI实现浏览器与服务器通信，路由route，WSGI实现页面访问

Django：Web框架，WSGI，WSGI实现浏览器与服务器通信，路由route，WSGI实现页面访问相关推荐

最新文章

热门文章